Glenn Miller: 30 Under 30

Glenn Miller, 29, has dramatically boosted the digital footprints of CAA artists including Katy Perry, John Legend, Nicki Minaj, Shania Twain and Justin Bieber. Miller helped Perry become the first singer to appear on Facebook's video channel, where she announced tour plans in January to more than 1.4 million fans. He also brokered a deal for Perry to launch the first Tweet 2 Screen campaign during her tour. CAA managing partner/head of music Rob Light says of Miller: "His understanding of the digital space, how to empower artists and how to communicate with fans is unparalleled."